Power supply cabinet



FIG. 1 is a front elevation view of a power supply cabinet in accordance with our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top, front, and right perspective view thereof.

The broken lines in the drawings illustrate portions of the power supply cabinet which form no part of the claimed design. 

CLAIM The ornamental design for a power supply cabinet, as shown and described. 